Re: Incorrect font weight selected

[Eli Zaretskii]

> From: Yuri D'Elia <wavexx@thregr.org>
> Cc: emacs-devel@gnu.org
> Date: Sun, 19 Dec 2021 12:14:28 +0100
> 
> On Sat, Dec 18 2021, Eli Zaretskii wrote:
> >> Just out of curiosity, if you happen to know it, how does the "custom"
> >> machinery does this then regarding to faces? It it also done in a frame
> >> hook?
> >
> > You mean, how it makes the customization be in effect for future
> > frames?  No, it just records the change in the default faces for new
> > frames.
> 
> Which is ok, but then again does it also delay the font selection until
> the first graphical frame is selected? Otherwise it would also suffer
> from selecting the font too early when used in daemon mode.

No, AFAIK font selection happens as soon as Emacs processes the
set-face-attribute call (or its equivalent) which sets the font or its
family for the default face.

> On my side, I've tried a few other approaches by never setting the
> default font (all frames), and only performing lookup/setting
> frame-specific fonts in the after-make-frame hooks. I'm running into all
> sort of quirks. Aside from the completely incorrect size (which I've
> just bumped up for the sake of testing), it looks like a lot of other
> things get broken. For example the bold version of the 'default face
> shows undefined glypths (the unicode square thingy), but only when the
> second frame is created. The second frame gets an identical treatment in
> the hook. Again, all these issues disappear if I set the default font
> for all frames at least once, and looks like I can set _any_ font. This
> seems to trigger some sort of one-time setup.

I'm not sure, after reading this, whether or not you found a
satisfactory solution, but if you are still looking for a hook to run
this kind of customization, you may wish trying emacs-startup-hook and
window-setup-hook.